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For protection of electric chains safety locks ножевого the type which colour corresponds to a current of protection of a safety lock are used. Serviceability of a safety lock is defined on presence of the wire conductor connecting contacts of a safety lock.
| PERFORMANCE ORDER |
| 1. For replacement of the failed safety lock preliminary switch off a corresponding electric chain, take a safety lock from a nest tweezers. |
| 2. If again established safety lock instantly fails at pressure giving, check up a protected electric chain. |
| 3. If the safety lock protects some chains they are necessary for connecting by turns that on перегоранию a safety lock to define a faulty chain. |
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